Should I use a garage forecourt car wash for my Hybrid and EV? In a word yes, Istobal have put together answer and info sheet.
How to wash an electric or hybrid car, there has been a lot of controversy about this, namely washing any vehicles with electrical sysytems, motors or batteries.
However there is no need to worry, tunnels rollovers and using a jet wash is completely safe it will not damage the electrical system or the batteries or the motors there is no big differences to washing say a diesel or petrol. There are some recommendations in the wash tunnel the ignition should be on and always make sure that the vehicle is always in Neutral to always make sure you've enough battery power to enter and exit the wash.
In a car wash tunnel always remember to leave the handbrake off that way the train can pull the car along, electric, hybrid and automatic cars should always be Neutral to stop the wheels locking allowing the car to move through the car wash tunnel.